/* ========================================
   おいで安 - メインスタイルシート
   和モダンなウェブサイト制作サービス
   ======================================== */

/* CSS Variables */
:root {
  /* Colors */
  --color-primary: #3e6e62;
  --color-primary-light: #4a7f72;
  --color-primary-dark: #2c4a42;
  --color-secondary: #6a8f85;
  --color-accent: #c9a868;
  --color-bg-main: #f4f1e6;
  --color-bg-light: #faf9f5;
  --color-bg-dark: #e8e2d5;
  --color-text: #2c4a42;
  --color-text-light: #6a8f85;
  --color-white: #ffffff;
  --color-black: #1a1a1a;

  /* Typography */
  --font-serif: 'Noto Serif JP', serif;
  --font-sans: 'Noto Sans JP', sans-serif;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 3rem;
  --spacing-xl: 5rem;

  /* Layout */
  --max-width: 1200px;
  --header-height: 80px;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;

  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
}

/* Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background-color: var(--color-bg-main);
  line-height: 1.8;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: var(--transition-fast);
}

a:hover {
  color: var(--color-primary-light);
}

ul, ol {
  list-style: none;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  font-weight: 600;
  line-height: 1.4;
  color: var(--color-primary-dark);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p {
  margin-bottom: var(--spacing-sm);
}

/* Container */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* ========================================
   Header
   ======================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
  z-index: 1000;
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.header__logo {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
}

.header__logo span {
  color: var(--color-accent);
}

.header__nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.header__nav-link {
  font-size: 0.9rem;
  color: var(--color-text);
  padding: var(--spacing-xs) 0;
  position: relative;
}

.header__nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: var(--transition-normal);
}

.header__nav-link:hover::after {
  width: 100%;
}

.header__cta {
  background: var(--color-primary);
  color: var(--color-white);
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: 4px;
  font-size: 0.9rem;
  transition: var(--transition-normal);
}

.header__cta:hover {
  background: var(--color-primary-light);
  color: var(--color-white);
  transform: translateY(-2px);
}

/* Hamburger Menu */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 30px;
  height: 30px;
  cursor: pointer;
  z-index: 1001;
}

.hamburger__line {
  width: 100%;
  height: 2px;
  background: var(--color-primary);
  transition: var(--transition-normal);
}

.hamburger.active .hamburger__line:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

.hamburger.active .hamburger__line:nth-child(2) {
  opacity: 0;
}

.hamburger.active .hamburger__line:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

/* Mobile Navigation */
.mobile-nav {
  position: fixed;
  top: 0;
  right: -100%;
  width: 80%;
  max-width: 320px;
  height: 100vh;
  background: var(--color-white);
  padding: calc(var(--header-height) + var(--spacing-md)) var(--spacing-md) var(--spacing-md);
  transition: var(--transition-normal);
  box-shadow: var(--shadow-lg);
  z-index: 999;
}

.mobile-nav.active {
  right: 0;
}

.mobile-nav__link {
  display: block;
  padding: var(--spacing-sm) 0;
  font-size: 1.1rem;
  color: var(--color-text);
  border-bottom: 1px solid var(--color-bg-dark);
}

.mobile-nav__cta {
  display: block;
  margin-top: var(--spacing-md);
  background: var(--color-primary);
  color: var(--color-white);
  padding: var(--spacing-sm);
  border-radius: 4px;
  text-align: center;
}

.overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-normal);
  z-index: 998;
}

.overlay.active {
  opacity: 1;
  visibility: visible;
}

/* ========================================
   Main Content
   ======================================== */
main {
  flex: 1;
  padding-top: var(--header-height);
}

/* Section */
.section {
  padding: var(--spacing-xl) 0;
}

.section--bg-white {
  background: var(--color-white);
}

.section--bg-light {
  background: var(--color-bg-light);
}

.section__title {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.section__title-en {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.8rem;
  color: var(--color-accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: var(--spacing-xs);
}

.section__title-ja {
  display: block;
  font-size: 2rem;
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
  position: relative;
  min-height: calc(100vh - var(--header-height));
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--color-bg-main) 0%, var(--color-bg-dark) 100%);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 60%;
  height: 200%;
  background: radial-gradient(ellipse, rgba(62, 110, 98, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero > .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-lg);
  width: 100%;
}

.hero__content {
  position: relative;
  z-index: 1;
  flex: 1;
  max-width: 550px;
}

.hero__catch {
  font-family: var(--font-serif);
  font-size: 3rem;
  line-height: 1.5;
  margin-bottom: var(--spacing-md);
}

.hero__catch-accent {
  color: var(--color-primary);
}

.hero__desc {
  font-size: 1.1rem;
  color: var(--color-text-light);
  margin-bottom: var(--spacing-lg);
  max-width: 600px;
}

.hero__buttons {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.hero__visual {
  position: relative;
  flex: 1;
  max-width: 500px;
  z-index: 1;
}

.hero__image {
  width: 100%;
  height: auto;
  filter: drop-shadow(0 10px 30px rgba(0, 0, 0, 0.1));
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: 4px;
  font-size: 1rem;
  font-weight: 500;
  transition: var(--transition-normal);
  cursor: pointer;
  border: none;
}

.btn--primary {
  background: var(--color-primary);
  color: var(--color-white);
}

.btn--primary:hover {
  background: var(--color-primary-light);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn--outline {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.btn--outline:hover {
  background: var(--color-primary);
  color: var(--color-white);
}

/* ========================================
   Concept Section
   ======================================== */
.concept__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
}

.concept__card {
  background: var(--color-white);
  padding: var(--spacing-lg);
  border-radius: 8px;
  text-align: center;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  border: 1px solid rgba(0, 0, 0, 0.05);
  transition: var(--transition-normal);
}

.concept__card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

.concept__icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--spacing-sm);
  background: var(--color-bg-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.concept__card-title {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-xs);
}

.concept__card-desc {
  color: var(--color-text-light);
  font-size: 0.95rem;
  text-align: left;
}

/* ========================================
   Target Section
   ======================================== */
.target__list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
}

.target__item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: var(--color-white);
  padding: var(--spacing-md);
  border-radius: 8px;
  box-shadow: var(--shadow-sm);
}

.target__check {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  line-height: 1;
}

.target__text {
  font-size: 1rem;
  line-height: 1.4;
  margin: 0;
}

/* Solution Area */
.solution {
  margin-top: var(--spacing-lg);
  text-align: center;
}

.solution__arrow {
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.solution__box {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-white);
  padding: var(--spacing-lg);
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
}

.solution__title {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  color: var(--color-white);
  margin-bottom: var(--spacing-md);
}

.solution__features {
  display: flex;
  justify-content: center;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
}

.solution__feature {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: 1rem;
  font-weight: 500;
}

.solution__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.15);
  border-radius: 50%;
  color: #fff;
}

.solution__note {
  margin-top: var(--spacing-md);
  padding-top: var(--spacing-sm);
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.8);
}

@media (max-width: 768px) {
  .solution__features {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-sm);
  }
}

/* ========================================
   Plan Section
   ======================================== */
.plan__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
  padding-top: var(--spacing-sm);
}

.plan__card {
  background: var(--color-white);
  border-radius: 8px;
  overflow: visible;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  border: 1px solid rgba(0, 0, 0, 0.08);
  transition: var(--transition-normal);
}

.plan__card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

.plan__card--recommended {
  position: relative;
  border: 2px solid var(--color-accent);
  box-shadow: 0 8px 30px rgba(201, 168, 104, 0.3);
  transform: scale(1.02);
}

.plan__card--recommended:hover {
  transform: scale(1.02) translateY(-4px);
}

.plan__badge {
  position: absolute;
  top: -10px;
  right: -10px;
  background: var(--color-accent);
  color: var(--color-white);
  padding: 6px 14px;
  border-radius: 4px;
  font-size: 0.8rem;
  font-weight: 700;
  white-space: nowrap;
  box-shadow: 0 2px 8px rgba(201, 168, 104, 0.4);
}

.plan__header {
  padding: var(--spacing-md);
  text-align: center;
  background: var(--color-primary-dark);
  border-radius: 8px 8px 0 0;
}

.plan__name {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-xs);
  color: var(--color-white);
}

.plan__price {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-white);
}

.plan__price-unit {
  font-size: 0.9rem;
  font-weight: 400;
  color: rgba(255, 255, 255, 0.9);
}

.plan__body {
  padding: var(--spacing-md);
}

.plan__feature {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) 0;
  border-bottom: 1px solid var(--color-bg-dark);
}

.plan__feature:last-child {
  border-bottom: none;
}

.plan__feature-icon {
  color: var(--color-primary);
}

.plan__cta {
  display: block;
  margin: var(--spacing-md);
  margin-top: 0;
}

/* ========================================
   Flow Section
   ======================================== */
.flow__list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.flow__item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  background: var(--color-white);
  padding: var(--spacing-md);
  border-radius: 8px;
  box-shadow: var(--shadow-sm);
}

.flow__number {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1;
}

.flow__content {
  flex: 1;
}

.flow__title {
  font-size: 1.1rem;
  margin-bottom: var(--spacing-xs);
  line-height: 1.4;
}

.flow__desc {
  color: var(--color-text-light);
  font-size: 0.95rem;
  margin: 0;
  line-height: 1.6;
}

/* ========================================
   Blog Section
   ======================================== */
.blog__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
}

.blog__card {
  background: var(--color-white);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-normal);
}

.blog__card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.blog__image {
  aspect-ratio: 16 / 9;
  background: var(--color-bg-dark);
  overflow: hidden;
}

.blog__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-normal);
}

.blog__card:hover .blog__image img {
  transform: scale(1.05);
}

.blog__body {
  padding: var(--spacing-md);
}

.blog__meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-xs);
}

.blog__date {
  font-size: 0.85rem;
  color: var(--color-text-light);
}

.blog__category {
  font-size: 0.75rem;
  background: var(--color-bg-light);
  color: var(--color-primary);
  padding: 2px 8px;
  border-radius: 4px;
}

.blog__title {
  font-size: 1.1rem;
  line-height: 1.5;
  margin-bottom: var(--spacing-xs);
}

.blog__excerpt {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

.blog__more {
  text-align: center;
  margin-top: var(--spacing-lg);
}

/* ========================================
   Blog List Page
   ======================================== */
.page-header {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-white);
  padding: var(--spacing-xl) 0;
  text-align: center;
}

.page-header__title {
  color: var(--color-white);
  margin-bottom: var(--spacing-xs);
}

.page-header__desc {
  color: rgba(255, 255, 255, 0.8);
}

.blog-list {
  padding: var(--spacing-xl) 0;
}

.blog-list__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
}

/* Pagination */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-xs);
  margin-top: var(--spacing-lg);
}

.pagination__link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 4px;
  background: var(--color-white);
  color: var(--color-text);
  box-shadow: var(--shadow-sm);
  transition: var(--transition-fast);
}

.pagination__link:hover,
.pagination__link.active {
  background: var(--color-primary);
  color: var(--color-white);
}

/* ========================================
   Blog Detail Page
   ======================================== */
.blog-detail {
  padding: var(--spacing-xl) 0;
}

.blog-detail__container {
  max-width: 800px;
  margin: 0 auto;
}

.blog-detail__header {
  margin-bottom: var(--spacing-lg);
}

.blog-detail__meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.blog-detail__title {
  font-size: 2rem;
  line-height: 1.4;
}

.blog-detail__image {
  margin-bottom: var(--spacing-lg);
  border-radius: 8px;
  overflow: hidden;
}

.blog-detail__content {
  background: var(--color-white);
  padding: var(--spacing-lg);
  border-radius: 8px;
  box-shadow: var(--shadow-sm);
}

.blog-detail__content h2 {
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-sm);
  padding-bottom: var(--spacing-xs);
  border-bottom: 2px solid var(--color-bg-dark);
}

.blog-detail__content h3 {
  margin-top: var(--spacing-md);
  margin-bottom: var(--spacing-xs);
}

.blog-detail__content p {
  margin-bottom: var(--spacing-md);
}

.blog-detail__content ul,
.blog-detail__content ol {
  margin-bottom: var(--spacing-md);
  padding-left: var(--spacing-md);
}

.blog-detail__content li {
  margin-bottom: var(--spacing-xs);
  list-style: disc;
}

.blog-detail__content ol li {
  list-style: decimal;
}

.blog-detail__nav {
  display: flex;
  justify-content: space-between;
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--color-bg-dark);
}

.blog-detail__nav-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  color: var(--color-text-light);
}

.blog-detail__nav-link:hover {
  color: var(--color-primary);
}

/* ========================================
   CTA Section
   ======================================== */
.cta {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-white);
  text-align: center;
  padding: var(--spacing-xl) 0;
}

.cta__title {
  color: var(--color-white);
  margin-bottom: var(--spacing-sm);
}

.cta__desc {
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: var(--spacing-lg);
}

.cta .btn--primary {
  background: var(--color-white);
  color: var(--color-primary);
}

.cta .btn--primary:hover {
  background: var(--color-bg-light);
  color: var(--color-primary);
}

/* ========================================
   Footer
   ======================================== */
.footer {
  background: var(--color-primary-dark);
  color: var(--color-white);
  padding: var(--spacing-lg) 0 var(--spacing-md);
}

.footer__inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.footer__logo {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.footer__logo span {
  color: var(--color-accent);
}

.footer__company {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9rem;
  line-height: 1.8;
}

.footer__title {
  font-size: 1rem;
  margin-bottom: var(--spacing-sm);
  color: var(--color-white);
}

.footer__link {
  display: block;
  color: rgba(255, 255, 255, 0.7);
  padding: var(--spacing-xs) 0;
  font-size: 0.9rem;
}

.footer__link:hover {
  color: var(--color-white);
}

.footer__bottom {
  text-align: center;
  padding-top: var(--spacing-md);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer__copyright {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.5);
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 1024px) {
  .concept__grid,
  .plan__grid,
  .blog__grid,
  .blog-list__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer__inner {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 60px;
  }

  h1 { font-size: 2rem; }
  h2 { font-size: 1.5rem; }

  .header__nav {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .hero__catch {
    font-size: 2rem;
  }

  .hero__visual {
    display: none;
  }

  .hero__buttons {
    flex-direction: column;
  }

  .concept__grid,
  .target__list,
  .plan__grid,
  .blog__grid,
  .blog-list__grid {
    grid-template-columns: 1fr;
  }

  .footer__inner {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .footer__menu--pc-only,
  .footer__title--pc-only,
  .footer__link--pc-only {
    display: none;
  }

  .section {
    padding: var(--spacing-lg) 0;
  }

  .section__title-ja {
    font-size: 1.5rem;
  }

  .blog-detail__title {
    font-size: 1.5rem;
  }

  .blog-detail__content {
    padding: var(--spacing-md);
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-sm);
  }

  .hero__catch {
    font-size: 1.75rem;
  }

  .btn {
    width: 100%;
  }
}